CAUTION! Before downloading or attempting to read, keep in mind that his edition is somehow censored, bowdlerized or similar vandalism.
The printed edition was a valuable work. As stated somewhere in the web, it is "Another book also antiquated, but fully useful for anyone wishing to understand the process of working copper on stakes...".
The printed version was good, but this scanning (made by Google) lacks figures. As example, in the file artcoppersmithi00fullgoog.djvu, you can read (p.31) "The pieces are first clipped... as in Fig. 17...; then... fastened... as shown in Fig. 18... an the sheets are then taked to the large bottom-stake (Fig. 19)", but there are not such figures, pages 32 and 33 contain not more than captions and empty spaces, as if figures were obliterated by pieces of paper.
There is other scanning, in http://www.archive.org/details/ArtOfCopperSmithing. It was done by IISC in Bangalore, India. It has poorest resolution than Google's, and the files are bigger, but the figures are present.